Apevia ITX-PFC400W Mini ITX/Flex ATX / 1U 400W Fully Modular Power Supply, Full Range Active PFC 90-264V, AC for POS AIO System Desktop Gaming Server Small Form Factor (Flex ITX) Computer PSU

Using a apivea spirit 600W ATX Psu for the moment in the air cooled units I'm selling I use Apivea flex 400W PSU https://a.co/d/019x5RFB they work awesome with them I think when I get around to putting in a box I'm going to have to upgrade to the flex 500W Apivea PSU with having the water block on and extra fans.